/*
 * ============================================================================
 *                   GNU Lesser General Public License
 * ============================================================================
 *
 *
 *
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
 * 
 *
 *
 */
package rad.framework.jsf;

import java.util.List;

import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Cache the editor bean calls that hit the database and return select item
 * lists.
 * 
 * @author boudyacho
 */
public class ListCacheInterceptor {

	private static final Log logger = LogFactory
			.getLog(ListCacheInterceptor.class);

	@AroundInvoke
	public Object invoke(InvocationContext ctx) throws Exception {
		if (ctx.getMethod().getReturnType().equals(List.class)) {
			String name = ctx.getMethod().getName();

			ListCache cache = new ListCache() {
				@Override
				protected Object proceed(Object ctx) {
					try {
						return ((InvocationContext) ctx).proceed();
					} catch (Exception e) {
						throw new RuntimeException();
					}
				}

			};
			return cache.invoke(ctx, name);
		}
		return ctx.proceed();
	}
}